National Weather Service California Nevada River Forecast Center Department of Commerce National Oceanic and Atmospheric Administration National Weather Service

 |  End of River Group

MOKELUMNE RIVER - BENSON'S FERRY (THTC1)
Latitude: 38.26º NLongitude: 121.44º WElevation: 16 Feet
Location: Sacramento County in CaliforniaBulletin Group: San JoaquinRiver Group: North San Joaquin
Action/Monitor: 12.0 FeetMinor Flood: 17.0 FeetModerate Flood: 19.0 FeetMajor Flood: 20.0 Feet
Please Note:
Observed Data Credit
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Raw streamflow data is provided by the California Department of Water Resources.
View California Department of Water Resources Data for this station location.

Historical Mean Daily Stage/Flow Data
Water Year
Peak Discharge (cfs)
Stage (feet)
Date
 Most Recent 5 Years
2025 -- 11.84 Feb 16, 2025
2024 -- 10.87 Mar 4, 2024
2023 -- 20.23 Jan 1, 2023
2022 -- 10.71 Dec 29, 2021
2021 -- 6.71 Jan 29, 2021
 Historical High Stage/Flow Events (Period of Record - Jan 1959 to Present) - Ranked by Stage
1997 -- 21.69 Jan 02, 1997
2017 -- 20.57 Feb 11, 2017
2023 -- 20.23 Jan 1, 2023
2006 -- 18.54 Apr 06, 2006
1986 -- 18.32 Feb 18, 1986
1995 -- 17.51 Mar 12, 1995
 * Datum changed from NGVD29 to NAVD88 on 10/01/2006. The difference is -0.75 ft and must be applied to all data before date to convert to NAVD88
Location Photographs
ESRI™ Locator Map
Flood Impacts
29.6 FeetTop of Levee Left Bank
17.25 FeetSome local farm roads are closed. Low lying areas along the river are flooded.
Official 7 Day National Weather Service Forecast   (CAZ017)
Tonight: Mostly cloudy with a slight chance of rain showers in the evening, then partly cloudy after midnight. Patchy dense fog late in the evening. Areas of dense fog and locally dense after midnight. Lows around 45. Southeast winds up to 10 mph in the evening becoming light.

Tuesday: Mostly sunny. Highs 55 to 63. Light winds.

Tuesday Night: Mostly clear. Lows around 46. Light winds.

Wednesday: Mostly cloudy. Highs 55 to 60. Light winds.

Wednesday Night: Mostly cloudy. A slight chance of rain showers in the evening, then a chance of rain showers after midnight. Lows around 48. Southeast winds up to 10 mph.

Thursday: Mostly cloudy with a chance of rain showers. Highs around 56.

Thursday Night: Partly cloudy with a slight chance of rain showers. Lows around 44.

Friday: Mostly sunny. Highs around 60.

Friday Night: Clear. Lows 39 to 47.

Saturday through Sunday Night: Mostly clear. Highs around 60. Lows 39 to 47.

Monday: Partly cloudy. Highs around 60.
Product Disclaimer

This river graphic is not intended to serve as a substitute for official flood watches, warnings, advisories, or statements issued by the NWS Sacramento Weather Forecast Office. Observations are preliminary and subject to change. River levels identified as "forecast" should be consistent with those contained in official NWS products. River levels identified as "guidance" have significant uncertainty due to future weather or reservoir regulation and are provided for planning purposes only.